Same but different. Mine were CE 1704's but on a blue PCB with components that looked more "modern" - i.e. squared off caps etc.. Any clues ?

We were very early customers of Crimson, perhaps you had a later version.
Was the PCB layout any tidier?_________________I contend that for a nation to try to tax itself into prosperity is like a
man standing in a bucket and trying to lift himself up by the handle.
-Winston Churchill

Whoops.. I missed this. All I remember about the PCB (quite OK) was the sight of emitter resistors fried ! The house stunk for hours and the pool of smoke was waist high around the entire downstairs ! Nice sound though....